图所示细胞最可能为()
A.分化较好的鳞癌
B.未分化癌
C.分化较好的腺癌
D.正常鳞状上皮细胞
E.正常腺上皮细胞
参考答案:B
For a linear demand curve, at the price where elasticity is -2.0, reducing prices will: ()
A. increase total revenue and we are at the point of maximum total revenue.
B. decrease total revenue and we are not at the point of maximum total revenue.
C. increase total revenue and we are not at the point of maximum total revenue.
在下列关于视图的叙述中,正确的一条是
A) 当某一视图被删除后,由该视图导出的其他视图也将被自动删除B) 若导出某视图的基本表删除了,但该视图不受任何影响C) 视图一旦建立,就不能被删除D) 当修改某一视图时,导出该视图的基本表也随之被修改